Patent US684531A successfully refreshed from Google Patents.
Patent US3605686A successfully refreshed from Google Patents.
US3605686A
Expired / Lapsed
US
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Coating machine
Assignee: Boston Machine Works Co
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Filing: 1969-05-26
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Granted: 1971-09-20
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Expires: 1989-05-26
Abstract
Abstract A MACHINE IS PROVIDED FOR APPLYING AN EVEN COATING OF LIQUID TO A WORKPIECE FED THROUGH THE MACHINE. THE MACHINE IS PARTICULARLY SUITABLE FOR APPLYING LIQUID BONDING CEMENT TO SHOE SOLES AND IS COMPRISED OF A RESILIENT ROLL DRIVINGLY MOUNTED IN A TROUGH CONTAINING A QUANTITY OF THE CEMENT. AN ARCUATE PRESSURE PLATE OF OF SLIGHTLY LARGE CURVATURE THAN THE ROLL IS MOUNTED IN CLOSE PROXIMITY TO THE ROLL SURFACE AND DEFINES AN ARCUATE WEDGE-SHAPED GAP IN WHICH THE LIQUID DEVELOPS A PRESSURE UPON ROTATION OF THE ROLL TO THEREBY CONTROL THE THICKNESS OF THE FIN ON THE ROLL AND PREVENT DISTORTION OF THE ROLL WHEN A WORKPIECE BEARS AGAINST THE ROLL.
Inventors
- 👤 Alton R Copithorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:09
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/18; A43D25/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |